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<FONT color="green">001</FONT>    /*<a name="line.1"></a>
<FONT color="green">002</FONT>     * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<FONT color="green">003</FONT>     * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<FONT color="green">004</FONT>     * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<FONT color="green">005</FONT>     * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<FONT color="green">006</FONT>     * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<FONT color="green">007</FONT>     * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     *   http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<FONT color="green">010</FONT>     *<a name="line.10"></a>
<FONT color="green">011</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<FONT color="green">012</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<FONT color="green">013</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<FONT color="green">014</FONT>     * See the License for the specific language governing permissions and<a name="line.14"></a>
<FONT color="green">015</FONT>     * limitations under the License.<a name="line.15"></a>
<FONT color="green">016</FONT>     * <a name="line.16"></a>
<FONT color="green">017</FONT>     */<a name="line.17"></a>
<FONT color="green">018</FONT>    <a name="line.18"></a>
<FONT color="green">019</FONT>    package examples;<a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>    import java.lang.reflect.Method;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.security.CodeSource;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.util.Enumeration;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.util.HashMap;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.util.Map;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.util.jar.JarEntry;<a name="line.26"></a>
<FONT color="green">027</FONT>    import java.util.jar.JarFile;<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>    public class Main {<a name="line.29"></a>
<FONT color="green">030</FONT>    <a name="line.30"></a>
<FONT color="green">031</FONT>        /**<a name="line.31"></a>
<FONT color="green">032</FONT>         * Helper application for example classes.<a name="line.32"></a>
<FONT color="green">033</FONT>         * Lists available classes, and provides shorthand invocation.<a name="line.33"></a>
<FONT color="green">034</FONT>         * For example:&lt;br/&gt;<a name="line.34"></a>
<FONT color="green">035</FONT>         * &lt;code&gt;java -jar commons-net-examples-m.n.jar FTPClientExample -l host user password&lt;/code&gt;<a name="line.35"></a>
<FONT color="green">036</FONT>         * <a name="line.36"></a>
<FONT color="green">037</FONT>         * @param args the first argument is used to name the class; remaining arguments<a name="line.37"></a>
<FONT color="green">038</FONT>         * are passed to the target class.<a name="line.38"></a>
<FONT color="green">039</FONT>         * @throws Exception <a name="line.39"></a>
<FONT color="green">040</FONT>         * @throws Exception <a name="line.40"></a>
<FONT color="green">041</FONT>         */<a name="line.41"></a>
<FONT color="green">042</FONT>        public static void main(String[] args) throws Exception  {<a name="line.42"></a>
<FONT color="green">043</FONT>            if (args.length==0) {<a name="line.43"></a>
<FONT color="green">044</FONT>                System.out.println("Usage: java -jar examples.jar &lt;exampleClass&gt; &lt;exampleClass parameters&gt;");<a name="line.44"></a>
<FONT color="green">045</FONT>            }<a name="line.45"></a>
<FONT color="green">046</FONT>            CodeSource codeSource = Main.class.getProtectionDomain().getCodeSource();<a name="line.46"></a>
<FONT color="green">047</FONT>            Map&lt;String, String&gt; map = new HashMap&lt;String, String&gt;();<a name="line.47"></a>
<FONT color="green">048</FONT>            if ( codeSource != null) {<a name="line.48"></a>
<FONT color="green">049</FONT>                final String sourceFile = codeSource.getLocation().getFile();<a name="line.49"></a>
<FONT color="green">050</FONT>                if (sourceFile.endsWith(".jar")) {<a name="line.50"></a>
<FONT color="green">051</FONT>                    if (args.length==0) {<a name="line.51"></a>
<FONT color="green">052</FONT>                        System.out.println("\nClasses found in the jar:");<a name="line.52"></a>
<FONT color="green">053</FONT>                    }<a name="line.53"></a>
<FONT color="green">054</FONT>                    JarFile jf = new JarFile(sourceFile);<a name="line.54"></a>
<FONT color="green">055</FONT>                    Enumeration&lt;JarEntry&gt; e = jf.entries();<a name="line.55"></a>
<FONT color="green">056</FONT>                    while (e.hasMoreElements()) {<a name="line.56"></a>
<FONT color="green">057</FONT>                      JarEntry je = e.nextElement();<a name="line.57"></a>
<FONT color="green">058</FONT>                      String name = je.getName();<a name="line.58"></a>
<FONT color="green">059</FONT>                      if (!name.endsWith(".class") <a name="line.59"></a>
<FONT color="green">060</FONT>                              || name.contains("$") // subclasses<a name="line.60"></a>
<FONT color="green">061</FONT>                              || name.equals("examples/nntp/NNTPUtils.class") // no main class<a name="line.61"></a>
<FONT color="green">062</FONT>                              || name.equals("examples/util/IOUtil.class") // no main class<a name="line.62"></a>
<FONT color="green">063</FONT>                              || name.equals("examples/Main.class")) {<a name="line.63"></a>
<FONT color="green">064</FONT>                          continue;<a name="line.64"></a>
<FONT color="green">065</FONT>                      }<a name="line.65"></a>
<FONT color="green">066</FONT>                      name = name.replace(".class", "");<a name="line.66"></a>
<FONT color="green">067</FONT>                      int lastSep = name.lastIndexOf('/');<a name="line.67"></a>
<FONT color="green">068</FONT>                      String alias = name.substring(lastSep+1);<a name="line.68"></a>
<FONT color="green">069</FONT>                      if (args.length==0) {<a name="line.69"></a>
<FONT color="green">070</FONT>                          System.out.printf("%-25s %s%n",alias,name);<a name="line.70"></a>
<FONT color="green">071</FONT>                      }<a name="line.71"></a>
<FONT color="green">072</FONT>                      map.put(alias, name);<a name="line.72"></a>
<FONT color="green">073</FONT>                    }<a name="line.73"></a>
<FONT color="green">074</FONT>                    jf.close();<a name="line.74"></a>
<FONT color="green">075</FONT>                }<a name="line.75"></a>
<FONT color="green">076</FONT>            }<a name="line.76"></a>
<FONT color="green">077</FONT>    <a name="line.77"></a>
<FONT color="green">078</FONT>            if (args.length==0) {<a name="line.78"></a>
<FONT color="green">079</FONT>                return;<a name="line.79"></a>
<FONT color="green">080</FONT>            }<a name="line.80"></a>
<FONT color="green">081</FONT>    <a name="line.81"></a>
<FONT color="green">082</FONT>            String shortName = args[0];<a name="line.82"></a>
<FONT color="green">083</FONT>            String fullName = map.get(shortName);<a name="line.83"></a>
<FONT color="green">084</FONT>            if (fullName == null) {<a name="line.84"></a>
<FONT color="green">085</FONT>                fullName = shortName;<a name="line.85"></a>
<FONT color="green">086</FONT>            }<a name="line.86"></a>
<FONT color="green">087</FONT>            fullName = fullName.replace('/', '.');<a name="line.87"></a>
<FONT color="green">088</FONT>            Class&lt;?&gt; clazz = Class.forName(fullName);<a name="line.88"></a>
<FONT color="green">089</FONT>            Method m = clazz.getDeclaredMethod("main", new Class[]{args.getClass()});<a name="line.89"></a>
<FONT color="green">090</FONT>            String[] args2 = new String[args.length-1];<a name="line.90"></a>
<FONT color="green">091</FONT>            System.arraycopy(args, 1, args2, 0, args2.length);<a name="line.91"></a>
<FONT color="green">092</FONT>            m.invoke(null, (Object)args2);<a name="line.92"></a>
<FONT color="green">093</FONT>        }<a name="line.93"></a>
<FONT color="green">094</FONT>    }<a name="line.94"></a>




























































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